taken 8 months ago, near to Seahouses, Northumberland, Great Britain

Lime kilns were (and are) used to heat and convert limestone or chalk (calcium carbonate) to quicklime (calcium oxide), which was/is used as mortar and in agriculture. Before the railways, limestone and coal (for fuel) were brought by sea to quayside kilns at small parts like Seahouses. The lime-making is long gone but the kilns live on as useful storage space. There are commonly seven kilns (as here) to allow production (loading 1 day, heating 3 days, cooling 2 days and unloading 1 day) to occur on a weekly rotation. Grade-II listed: Link .